I am typing this on the new machine. Ubuntu install was completely painless: the (integrated) videocard was detected without any problems -- I didn't even need to install a restricted module to get a resolution of 1280x1024 (which I prefer, I could have gone higher). Sound works out of the box too.
Sure, the update process that's going on right now pulls the CPU to 100%, but that's something I can live with. Especially when it's as quiet as this thing. I will be converting all my stuff over to this little machine (which I have named Calcifer), to use it for my day-to-day needs.